[Dune] parallel alugrid

Andreas Dedner a.s.dedner at warwick.ac.uk
Wed Sep 9 14:17:05 CEST 2015


Hi.
How do you read in your grid? Please post the code you are using to do that.
Andreas


On 09/09/15 13:07, Ganesh Diwan wrote:
> Hi Dune list
> 
> I am not able to distribute the grid with loadbalance when I use alugrid
> as gridtype.  All processes contain the same number of elements as the
> original grid. I think alugrid is not correctly configured for parallel
> mode. However uggrid seems to work as loadbalance splits the grid and I
> can see the rank partitions in vtk output fine. I configured with
> following contents in my opts file:
> 
> CONFIGURE_FLAGS="CXX=g++-4.8 \
> --enable-parallel \
> --enable-experimental-grid-extensions \
> --with-metis=/usr \
> --with-metis-lib=metis \
> --with-parmetis=/usr \
> --with-parmetis-lib=parmetis \
> --with-alberta='/home/gcd3/dune/ext_build/alberta' \
> --with-zoltan='/home/gcd3/dune/ext_build/Zoltan-v3.82' \
> --with-ug='/home/gcd3/dune/ext_build/ug' \
> --prefix='/home/gcd3/dune/core-2.4.0/install/' \
> "
> 
> Do I need to include any other flags, perhaps adding CXXFLAGS=mpicc? I
> was under impression that --enable-parallel would invoke the parallel
> flags for grid, is it correct?
> 
> Thanks in advance for help,
> Ganesh
> 
> 
> 
> 
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